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有这样一道题:一辆公交车上有乘客12人,到一站后,上了8人,下了3人;再到一站,上了6人,下了7人;再到一站,上了5人,下了2人;再到一站,上了7人,下了9人……在做题时,人们通常只是匆匆地思考公交车上有多少乘客?或是多少人上车?多少人下车?而这道题实质上想问的是:公交车走过了几站?为什么会出现这种情况呢?我们知道,物体在任何情况下都有惯性,其实人的思维也不例外。我们习惯于画完龙再点睛,读完材料再看设问,往往导致学生在做题时受到一些无效因素的干扰,对审题造成不利的影响。这时,我
There is such a problem: a bus passenger 12 people, to a station, on the 8 people, the next three people; to a stop, on the 6 people, down 7 people; to a stop, Up to 5 people, down 2 people; then to the stop, up 7 people, down 9 people ... When doing the questions, people usually just rush to think about how many passengers in the bus? Or how many people on the train How many people get off? And this question essentially want to ask is: How many stops have the bus passed? Why is this happen? We know that objects have inertia in any case, in fact, the human mind No exception. We are accustomed to draw the dragon and then a little eye contact, read the materials and then read the set of questions, often lead students to be subject to some invalid factors interference, adverse impact on the trial. At this moment, I